using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"^begin.*(?:\n(?!begin|end$).*)*\b536916223\b.*(?:\n(?!begin|end$).*)*\nend$";
string input = @"begin active link
export-version : 11
actlink-order : 2
wk-conn-type : 1
schema-name : HelpDesk
actlink-mask : 1
actlink-control: 750000002
enable : 1
action {
set-field : 0\536916222\101\4\1\1\
}
errhandler-name:
end
begin active link
export-version : 11
actlink-order : 2
wk-conn-type : 1
schema-name : HelpDesk
actlink-mask : 1
actlink-control: 610000092
enable : 1
permission : 0
action {
id : 536916223
focus : 0
access-opt : 1
option : 0
}
action {
set-field : 0\536916222\101\4\1\1\
}
errhandler-opt : 0
errhandler-name:
end
begin active link
actlink-order : 12
wk-conn-type : 1
schema-name : HelpDesk
actlink-mask : 2064
enable : 1
permission : 0
action {
id : 536916223
focus : 0
access-opt : 1
option : 0
}
action {
set-field : 0\536916222\101\4\1\1\
}
errhandler-opt : 0
errhandler-name:
end";
RegexOptions options = RegexOptions.Multiline;
foreach (Match m in Regex.Matches(input, pattern, options))
{
Console.WriteLine("'{0}' found at index {1}.", m.Value, m.Index);
}
}
}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for C#, please visit: https://msdn.microsoft.com/en-us/library/system.text.regularexpressions.regex(v=vs.110).aspx